Name the isomers of polysaccharides. Include their molecular formula.

Answer:

2

Explanation:

Answer:

\(\boxed {\boxed {\sf 0.3 \ mol \ NaNO_3}}\)

Explanation:

Molarity is a measure of concentration in moles per liter.

\(molarity= \frac{moles \ of \ solute}{liters \ of \ solution}\)

The molarity of the solution is 1.2 M NaNO₃ or 1.2 moles NaNO₃ per liter. There are 0.25 liters of the solution. The moles of solute are unknown, so we can use x.

\(1.2 \ mol \ NaNO_3/L= \frac{x}{0.25 \ L}\)

We are solving for x, so we must isolate the variable, x. It is being divided by 0.25 liters. The inverse of division is multiplication, so we multiply both sides by 0.25 L.

\(0.25 \ L *1.2 \ mol \ NaNO_3/L=\frac{x}{0.25 \ L} *0.25 \ L\)

\(0.25 \ L *1.2 \ mol \ NaNO_3/L=x\)

The units of liters cancel, so we are left with the units moles of sodium nitrate.

\(0.25 *1.2 \ mol \ NaNO_3=x\)

\(0.3 \ mol \ NaNO_3=x\)

There are 0.3 moles of sodium nitrate.

Answer:

17.48

Explanation:

mass=density×volume

= 0.713g/ml × 24.5 ml

= 17.4685

≈ 17.47

Explanation:

203.31                brainliest

Answer:

203.31g when rounded to 2 decimal places.

The equilibrium constant, K, for the given reaction at 450 K is 4.33.

The equilibrium constant, K, for the given reaction is given by the Expression:

K = [Nocl]^2 / ([NO]^2 [Cl2])

Where [NO], [Cl2], and [Nocl] are the equilibrium partial pressures of the Respective gases.

At equilibrium, the partial pressures of NO, Cl2, and Nocl are 0.075 atm, 0.191 atm, and 0.35 atm, respectively.

Substituting these values in the expression for K, we get:

K = (0.35)^2 / ((0.075)^2 (0.191))

K = 4.33

Therefore, the equilibrium constant, K, for the given reaction at 450 K is 4.33.

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Answer:

Hello, The answer to your question is,

D. comparison

Explanation:

I hope this helps |^_^|

Explanation:

45.8 grams of Fe2O3*(1 mole/159.69 g)= moles of Fe2O3

moles of Fe2O3 *(3 moles of O2/2 moles of Fe2O3)=moles of O2

moles of O2*(32.0g of O2/1mole)= mass of O2

Answer:

\(\large \boxed{4.12 \times 10^{23}\text{ formula unis of CaCl}_{2}}$}\)

Explanation:

You must calculate the moles of CaCl₂, then convert to formula units of CaCl₂.

1. Molar mass of CaCl₂

CaCl₂ = 40.08 + 2×35.45 = 40.08 + 70.90 = 110.98 g/mol

2. Moles of CaCl₂ \(\text{Moles of CaCl}_{2} = \text{75.9 g CaCl}_{2} \times \dfrac{\text{1 mol CaCl}_{2}}{\text{110.98 g CaCl}_{2}} = \text{0.6839 mol CaCl}_{2}\)

3. Formula units of CaCl₂

\(\text{No. of formula units} = \text{0.6839 mol CaCl}_{2} \times \dfrac{6.022 \times 10^{23}\text{ molecules CaCl}_{2}}{\text{1 mol P$_{2}$O}_{5}}\\\\= \mathbf{4.12 \times 10^{23}}\textbf{ formula units CaCl}_{2}\\\text{There are $\large \boxed{\mathbf{4.12 \times 10^{23}}\textbf{ formula units of CaCl}_{2}}$}\)

Answer:

its sodium hydroxide

Explanation:

The freezing point of the solution with 70.0g of cacl2 in 100.0 g of water is 285 K.

The freezing point is the temperature of a liquid at which it changes its state from liquid to solid at atmospheric pressure.

At freezing point, these two phasesviz. liquid and solid live in equilibrium i.e. at this point both solid state and liquid state live contemporaneously. The freezing point of a substance depends upon atmospheric pressure.

The molecular weight of glucose CaCl2

​ =1(40)+2(35)= 110 g/mol.

The number of moles of CaCl2 = 70g/110g/mol

​ =0.63637 moles

Mass of water = 100 g = 0.1 kg

The molality of CaCl2 m= 0.63637 moles/0.1kg

= 6.3637 mol/kg

The depression in the freezing point

ΔTf =Kf m= 1.87 K kg/mol × 6.3637 mol/kg = 11.9 K

Freezing point of water =273 K

The freezing point of the solution

= 273+ 11.9 = 285 K

Therefore, the freezing point of the solution is 285 K.

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Answer:

its a theory

Explanation:

dealing with the behaviour of matter and light on the atomic and subatomic scale.

When a 200°C iron bar is placed in thermal contact with a 30°C block of wood, energy leaves the iron bar and enters the wood until the temperatures are equal.

Law of conservation of energy states that the energy cannot be lost or formed but it can only be transformed from one form to another.

According to the given question, the block of wood is at a lower temperature than an iron bar. Hence, heat will flow from the iron bar to the block of wood until the temperatures of both are equal.

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Answer:

right now we are using energy by online learning on our laptops , air conditioning, and transportation

Explanation:

Key differences between Mass and Weight

The weight may vary, but the mass is constant.

The mass is measured in kilograms (kg), while the weight is measured in newtons (N).

Mass refers to the amount of matter an object has, but the weight refers to the force of gravity acting on an object.

Answer:

C. Academic English

Explanation:

just a side note, it'd be alot easier if you put the answers like this:

A. Urban English

B. Standard English, and et

Explanation:

Answer:true

Explanation:

Answer:

The balanced chemical equation for the reaction of CO2 and H2 to produce H2O and CO is:

CO2 + 4H2 -> CH4 + 2H2O

From the equation, we can see that for every 1 mole of CO2 reacted, 2 moles of H2O are produced. Therefore, if 2.5 moles of CO2 are produced, the number of moles of H2O produced would be:

2.5 moles CO2 * (2 moles H2O / 1 mole CO2) = 5 moles H2O

Therefore, 5 moles of H2O would be produced when 2.5 moles of CO2 is produced.

The amount, in kJ, of heat needed to completely vaporize 50.0g of water at 100°C is 118.8 kJ.

The heat needed to completely vaporize 50.0g of water at 100°C can be calculated using the following formula:

q = m x Hv

where:

First, we need to convert 50.0g to moles by dividing by the molar mass of water which is approximately 18.015 g/mol3:

moles of water = 50.0 g / 18.015 g/mol moles of water = 2.776 mol

Thus:

q = (2.776 mol) x (40.65 kJ/mol) q = 112.8 kJ

In other words, 112.8 kJ of heat is needed to completely vaporize 50.0g of water at 100°C.

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Answer:

8

Explanation:

Answer:

1 tablet

Explanation:

Assuming that gm stands for gram:

Put everything in one unit, 0.3 g = 300 mg.

And given that each tablet is 300 mg:

mass/amount = 300mg / 1 tablet

300mg / X amount = 300mg / 1 tablet

(300mg/300mg) tablet = X = 1 tablet

So it is 1 tablet you need.

One tablet should be given. A dosage is a set quantity of medication administered all at once.

A dosage is a set quantity of medication administered all at once. Contrarily, the dosage is the recommended way to take the drug: a specified quantity, amount, and regularity of doses spread over a specific amount of time.

To put it another way, a dosage is simply the quantity of medication that you consume at one particular moment. The dosage consists of the pharmacological dose, or amount, as well as the timing and frequency of administration. How you should administer or take the recommended medication is determined on the dosage.

0.3 g = 300 mg.

each tablet is 300 mg:

mass/amount = 300mg / 1 tablet

300mg / X amount = 300mg / 1 tablet

(300mg/300mg) tablet = X = 1 tablet

Therefore, one tablet should be given.

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The balanced equation of the redox reaction is given as follows:

The balanced equation of the reaction is determined using the half-reaction method.

The given equation of the redox reaction is:

H₆TeO₆ + Br₂ ----> TeO₂ + BrO₃⁻

Reduction half-reaction:

H₆TeO₆ → TeO₂

The oxidation state of Te changes from +6 to +4, showing that it has lost gained electrons.

H₆TeO₆ → TeO₂ + 2e⁻

Oxidation half-reaction:

Br₂ → BrO₃⁻

The oxidation state of Br changes from 0 to +5, showing that it has lost five electrons.

Balancing the electrons transferred and the atoms by adding electrons, H₂O, and H⁺ to the appropriate sides:

Br₂ + 6 H₂O → 2 BrO₃⁻ + 12 H⁺ + 10 e⁻

The number of electrons transferred in both half-reactions balanced is  by multiplying the oxidation half-reaction by 5 and the reduction half-reaction by 2:

5 (H₆TeO₆ → TeO₂ + 2 e⁻) → 5 H₆TeO₆ → 5 TeO₂ + 10 e⁻

2 * (Br₂ + 6H₂O → 2 BrO₃⁻ + 12 H⁺ + 10e⁻) → 2 Br₂ + 12 H₂O → 4 BrO₃⁻ + 24 H⁺ + 20 e⁻

The two half-reactions are added together and the electrons are canceled out to obtain the balanced redox reaction:

5 H₆TeO₆ + 2 Br₂ + 12 H₂O → 5 TeO₂ + 4 BrO₃⁻ + 24 H⁺

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Answer:

m = 97.9 g

Explanation:

Given data:

Volume of water = 97.90 mL

Density of water = 1.00 g/mL

Mass of water  = ?

Solution:

Density:

Density is equal to the mass of substance divided by its volume.

Units:

SI unit of density is Kg/m3.

Other units are given below,

g/cm3, g/mL , kg/L

Formula:

D=m/v

D= density

m=mass

V=volume

by putting values,

1.00 g/mL = m / 97.90 mL

m = 1.00 g/mL × 97.90 mL

m = 97.90 g

Mass in three significant figures:

m = 97.9 g

The atomic number 11 element is sodium. It's from the s block. Sodium is a very soft metal. Praseodymium is an element with the atomic number 59.

An element is a material that, when heated or illuminated, cannot be divided into two or maybe more simpler compounds by any chemical technique.

For example, when a piece of gold is melted, it still melts as well as stays as the gold element. Praseodymium is an element with the atomic number 59. It is a member of the Lanthanide series. The atomic number 11 element is sodium. It's from the s block. Sodium is a very soft metal.

Therefore, the atomic number 11 element is sodium. It's from the s block. Sodium is a very soft metal. Praseodymium is an element with the atomic number 59.

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Answer:

Average kinetic energy of gases, which is derived from the RMS (root mean square speed) and KE equation, can be solved as:

It appears that the average KE of gases is dependent on the temperature which means that all gases will have the same KE as long the temperature is the same

Answer: The balanced equation is \(2KOH + H_{2}SO_{4} \rightarrow K_{2}SO_{4} + 2H_{2}O\) and the concentration of the sulfuric acid solution is 0.184 M.

Explanation:

Given: \(V_{1}\) = 27.5 mL,       \(M_{1}\) = 0.235 M

\(V_{2}\) = 35.0 mL,            \(M_{2}\) = ?

Formula used to calculate the concentration of the sulfuric acid solution is as follows.

\(M_{1}V_{1} = M_{2}V_{2}\)

Substitute the values into above formula as follows.

\(M_{1}V_{1} = M_{2}V_{2}\\0.235 M \times 27.5 mL = M_{2} \times 35.0 mL\\M_{2} = \frac{0.235 M \times 27.5 mL}{35.0 mL}\\= 0.184 M\)

The given chemical equation for given reaction is as follows.

\(KOH + H_{2}SO_{4} \rightarrow K_{2}SO_{4} + H_{2}O\)

Number of atoms on reactant side are as follows.

Number of atoms on product side are as follows.

To balance this equation, multiply KOH by 2 on reactant side and multiply \(H_{2}O\) by 2. Hence, the equation can be rewritten as follows.

\(2KOH + H_{2}SO_{4} \rightarrow K_{2}SO_{4} + 2H_{2}O\)

Now, number of atoms on reactant side are as follows.

Number of atoms on product side are as follows.

Since, there are same number of atoms of both reactant and products. Therefore, the equation is now balanced.

Thus, we can conclude that the balanced equation is \(2KOH + H_{2}SO_{4} \rightarrow K_{2}SO_{4} + 2H_{2}O\) and the concentration of the sulfuric acid solution is 0.184 M.

Answer:

B

Explanation:

it is bigger then earth so it will have a greater mass.

Answer:

B

Explanation:

It has a greater mass HOPE THIS HELPS l_l

Answer:

32.5

Explanation:

2C⁴H¹⁰ needs 13 O²

5 C⁴H¹⁰ needs (13/2 × 5) O² = 32.5 O²

The answer is D, 32.5

(I took the test)

When 2.0 moles of KCIO3 decompose, 2.0 moles of O2 will form.

The balanced chemical equation shows that 2 moles of KCIO3 decompose to produce 3 moles of O2. Therefore, we can use the stoichiometric ratio from the balanced equation to determine the number of moles of O2 formed when 2.0 moles of KCIO3 decompose.

According to the stoichiometry, 2 moles of KCIO3 produce 3 moles of O2. Therefore, we can set up a proportion:

(2 moles KCIO3 / 2 moles O2) = (2.0 moles KCIO3 / x moles O2),

where x represents the unknown number of moles of O2 formed.

Simplifying the equation:

(2 moles KCIO3 / 2 moles O2) = (2.0 moles KCIO3 / x moles O2),

1 = (2.0 moles KCIO3 / x moles O2),

Cross-multiplying:

x moles O2 = (2.0 moles KCIO3 / 1),

x moles O2 = 2.0 moles KCIO3.

Therefore, when 2.0 moles of KCIO3 decompose, 2.0 moles of O2 will form.

It is important to note that this calculation assumes complete and ideal conditions, where the reaction proceeds with 100% efficiency. In reality, the actual yield of O2 may be lower due to various factors such as side reactions or incomplete decomposition. To determine the actual yield, additional information or experimental data would be required.

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Answer: \(y = \frac{1}{4}x-3\)

Explanation:

To find the inverse of an equation, follow these steps:

We are given the equation \(f(x) = 4x + 12\) , so replace f(x) with x.

Then, replace x with y.

Your new equation:

\(x = 4y + 12\)

Now, solve for y:

\(x = 4y + 12\\\\4y = x - 12\\\\y = \frac{1}{4}x-3\)

This equation is the inverse of f(x), or g(x).